Automobile-cover



P. F. KING.

AUTOMOBILE COVER.

APPLICATION, FILED DEcz. 191s.

Patented Sept. 6, 1921.

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P. F. KING.

AUTOMOBILE COVER.

APPLICATION FILED DEC.28, 198.

Patentdept. 6, 1921.

4 SHEETS-SHEET 2.

lll-lll-Ill-llllllll-lilil-Im-lll P. F.' KING.

AUTOMOBILE COVER.

APPLICATION FILED DEc.2s.. |4918.

Eatented Sept. 6, 19271..

4 SHEETS-SHEET 3.

P. F. KING.

` AuoMoBlLE COVER.

APPLICATION FILED DEC.28. 191B.

1,3%, 1 a?. fmwdsep.. 6,1921.

4 SHEETS-SHEET 4.

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T0 all fw 710m it may concern Be. it knownv thatl, PnnoIvAL FAULKNER KING, a subject of the King ot Great Britain, and a resident of the city or' Vancouver, in theProvince of British Columbia, Canada, have invented certain new and useful lmprovementsV in Automobile- Covers, of which the following is awspeciiication.

My invention relates toimprorements in automobile covers, and'theobjectoif my invention is to provide a cover adapted to be carried on the machine in a normally col:- lapsed position capableA of being automatically extended to the covering position or with equal facility retracted ancl..collapsed to its normal position at the; will'ot the. driver, thesaid cover including` not only the canopy for the top of the car but the back curtain as well and having also `provision for inclosing the sides.

l attain this object by thefconstruction illustrated in the aeconlpanyingV drawings in which- Ii'igure 1 is a back View oi the cover raising mechanism, entendedi Fig. 2 is a back `View ot' the raising and extending mechanism, collapsed.

Fig. 3 is aside View of the Icover raised and extended.

Fig; et" is a fragmentary plan Vie'wot the cover. i

Fig. 5 is a planyiew ofthe canopy supporting ribs and lazy tongs. y

6 is a detail View of a canopy supporting rib and side curtain support.

Fig. 7 is a partial plan View ci theside curtain arrangement. i i

Fig. 8 is a side Viewot Fig. 7.

Fig. 9 is a front View' of the pressure clutch for the raising lever blocks. i

Fig. 10 is a side View of Fig. 9.

Fig. 11 is a View in part `section of the two uppermost sections oi the telescopic member. I

Fig. 12 is a rear AView of the back curtain.

13 is a fragmentary sectional View of the cover-bok. v

Fig. 11- is. a flagmentary View illustrating the connection ol' the canopy top and windshield. Y Y i Similar tigures of reference indicate similar` partsthroughout the several views.

'l in 3 indicates the back ot an automobile body on which is mounted a boX 2 adapted to contain the normally collapsed Specification of Letters Patent., y

pplication filed December 28, 1918.

Patented Sept. 6, 1921. SerialV No. 268,729.

provided with'right and left rhand threads 13 respectively, the outer extremities yo-it`nese .threads terminating aV short distance `from the `respective bearings 9 and 10 'se that plain `portions 14 and 15 are provided on which are mounted between the endsot the threads and the bearings springs 1G and 17 respectively, the midlength portion 18 ot the shaft being `also plain, as shown in` Figs. 1 and 2.

Q0 indicates' generally a frame 'disposed above the bar 5 and connected thereto by collapsing levers -formed of the bars 21-22 and; 2n2fl-bar 21 being pivotally connected to bar `5 as at 25 and bar 22 to bar' .2G of the Yframe 2O `as at 2?, while bars 23 `and 24: are pivotally connectedrespectively to bars 5 2.1-22 and 23-24 being pivotally connected together as shown at 30 and 31V in Fig.V 2.

The bars 2G 01"' frame 2O is `provided on its underside with a slot V32, indicated dotted in l? 1, so that tongues 38 formed on blocks gaand plvotally'connected to the and A26 at 2S and 29, eachpair of bars upper ends of crossed levers Strand 37 may normally support the lbar and yet be capable of lateral movement along the same as the device is operated.

:The crossed'levers 3G and 37 Just referred to are pivotedl together at midlength and their `lower ends are pivotally connected to blocks i8 and 39 threaded correspondingly to and mounted on the threaded portions 12 and 13 respectively of the shaft 11, from whichit will be readily seen that movement et the blocks laterally inward on the threads from the position shown in Fig. 2 will extend the` levers 3G and 37 to raise the trame 2O totheposition shown in Fig. 1 and that movement of the blocks in thercverse direction, ,orv laterally outward, wilicollapse the levers and return them and the frame to the Vnormal position shown yin Fig. 2, the bars 2122 and 23e-24 also extending and Vcollapsing respectively and concurrently with the extension and collapse of the levers 36 and 37, cords 131--132 being provided for the purpose of breaking the joints of the barsV prior to collapse, these cords being connected at one end to blocks 38 and 39 and at the opposite ends to bars 21 and 23 respectively. l

40 indicates a bar also forming part of frame 20 arranged above bar 26 and on this bar -are slidably and swingably mounted bearings 41 and 42 to which are attache-d respectively-the inner end levers 43 and 44 of a lazy tongs 45, the outer end levers of the lazy tongs being slidably mounted on a cross-bar 46, as shown in Figs. 2 and 5, while the bearings 41 land 42 are provided with internally threaded portions 41ZL and 42a through Awhich are passed respectively right and left hand threaded portions 46 and 47 vformed on a shaft 48 rotatably mounted in 'bearings 49 and 50 swingably mounted on the bar 40, the shaft 48 being formed plain at each endfor a short distance between the respective bearings and the threads, as at 51-52 and also for a portion of its midlength asl at 53, collars 54 and 55 Vsuitably spaced apart being formed on the plain portion 53, and springs 56-57 being` mounted on the plain portions 51-52 and springs 58-59-on the portion 53 between the collars and theV inner ends of the threaded portions, as shown in Fig. 2. V

60 indicates a bevel gear secure-d to shaft 11 meshing with a gear 61 secured to the lower'end section 62 of a telescopic shaft indicated generally by the numeral 63, the section 62 being rotatably supported in a suitable bearing 64 formed integrally with or otherwise secured to the bar 5. The uppermost section 65 of the shaft 63 is rota tably connected in any approved manner to the frame 2O and is provided with a bevel cearr66 designed to mesh with a bevel gear the other and as it is intended that the shaft 57 mounted on the shaft 48, as indicated in Fig. 1, and as will be hereinafter more fully described. rllheintermediate sections of the shaft 63 are of course slidable one within 63 shall not rotate to actuate gear 66 until it is fully extended, and shall cease rotating when it starts to collapse, the lower end'of each respective section is provided with rounded projections 68 adapted to lit corresponding cup shaped depressions 69 formed in the upper end of each respective lower section when the respective lower and upper ends are in contact, as shown in Fig. 11, from which it will be seen that, as the lower section 62 normally rotates, on the engagement of the projections 68 with the cups 69, the entire extended shaft will start rotating and that.l on disengagement of the projections, it will cease-to rotate, such engagement and disengagementbeing eifected concurrently with the complete extension of the levers 36 and 37 and the commencement of the collapse ofthe same respectively.

The lazy tongs 45 are formed after the usual fashion and to the pivots 72 of each set of crossed levers of the tongs are connected transversely of the levers thin canopy-supporting cross bars 73, these bars being thicker at midlength than at their ends so as to give a flat effect on top when curved toward their opposite ends as at 74 by the arching of the cover and being doubled over at their extremities to form eyes 75 through which are passed flexible cords 76 and 77 the outer ends of which lare connected to the front bar 46 already mentioned and as shown in Fig. whiletheir opposite ends are passed Vover sheaves or rollers 78 and79 respectively rotatably mounted on the frame- 20 at each end thereofand connected to sheaves 8O and 81 secured to the ends of shaft 11, which are extended as shown in Figs. 1 and 2 from which it will be seen that rotation of the sheaves l8O and 81 'in one direction will wind the Vcords 76 and 7 7 thereon while rotation in the opposite direction will unwind them.

1t should be particularly noted here that the length of the cords 76 and 77 issuch that when extending the cover, they become taut before the lazy tongs so that the pressure of the extending lazy tongs on the taut cords prior to complete extension of the cover arches the lazy ton s upwardly and produces the well-known 4. reach back formation. j

82-83 and 84 and 85 indicate pairs of bars pivotally connected to each other at 86 and to the cross bars 73 as at 87 there being two pairs of such bars arranged between each pair of cross bars and designed to form straight longitudinally extending rigid bars, indicated generally by lthe numeral 88, on

each side of the lazy tong levers when the same are extendedso as to provide a support for all the cross bars and also to maintain them parallel when extending or retracting so that the eyes 75 of the cross bars will then travel freely along the flexibley cords 76 and 77.

tain the lazy tongs in horizontal position when extending, while 93-94 indicate pivoted arms connected tothe outermost levers of the lazy tongs, as shown in Fig'. 5, pro vided with jaws 95--96-adapted to engage posts 97 secured to the windshield 98, as

indicated in Fig. 14, and thus hold the front mamar end of the canopy securely, in placewhen extending and nit may be here mentioned that` while the posts 97 may be secured directly to the windshield, as the same is ordinarily found in automobiles,on the other hand they may be mounted onk a frame 99 independent of the windshieldas indicated in Fig. 14, to enable the same to be swung down when the canopy is extendedl and without altering the position ot the posts. `'lllhese posts 97 are formed of less diameter at their midheight than at their ends which taper toward the midheight as shown so that no matter at what point they are engaged bythe jaws 95-96 these will always `come to the middle of the posts, being held there by the pressure oi' the extended tongs and being capable of releasing themselves due to the rounded shape of the jaws when the pull of the retreating tongs comes on them.

The canopy 100 is formed of anysuitable material and of such length as to cover the entire top of the automobile when extended. At its outer end it is secured to a bar 101 located in front of bar 46 while at its rear end it is doubled over and stiii'ened to form a hinged portion 102 adapted to engage a bar 103 forming part of frame 20 so that, in effect, the canopy is stretched between the bar 101 and the bar 103 by the lazy'tongs. The hinged portion 102 while being stili enough to maintain the rear end of the can-V opy taut is yet capable of folding against the same so as to permit of the rolling up of the cover on the roller'8, which is effected by the spring action of the roller when the device is being returned to its normal` collapsed posi# tion, the roller operating in the same manner as a: windowV shade roller, ,as willA `be well understood without further description, tapes 1041 connecting the rear end of `the canopy to the roller whenV the cover is raised, as shown in Figs. 1 and 12. Along each longitudinal edge the canopy is provided with flexible tapes 105 and embodied in the material of the cover at suitable points in its length are thi-n flexible metallic strips 106, the position of which is such that when the cover is extended they are disposed centrally oi the cross supporting bars 78, the purpose of the tapes 105 vand the strips 106 being to maintain the close fitting of the cover so that it `may not wrinkle 0r buckle when fully extended. Y

The bar 108 is provided with a series `ot rollers 107 so that the movement of the canopy over the bar is facilitated, and the. bar is raised high enough to support the rear end or' the canopy clear of the slidablebearings 41 and 4t2 when these are inl operation.

As it is intended that the threaded blocks Y means for `the automatic rengagement of rotatably these blocks on their threads at the proper times and this is eli'ected by means ot' a clutch `indicated generally by the numeral 108 in Figs. 1 and 2 and shown in detail in Figs. 9 and 10.

This clutch consists of a collar 109 threaded on to the lowest section 62 of the shaft 63, which is threaded correspondingly to receive it and the collar is provided with a projection 110 engaging a slot 111 in a guide member 112 secured rigidlypto bearing 64 so that the collar 109 is prevented from rotating ,but is capable ot' being raised or lowered on the section `62 by the rotation of the same. Connected to the collar on its transverse axis are levers 113-114 extending outwardly and Vdownwardly and provided on their lower ends respectively with members 115-116 substantially of horse shoe formation adapted to lit over shaft 11 and to engage the inner `ends of blocks 88 and 89 as shown in Fig; 9, from,` which `it will be seen that, the device being in the position sho-wn in FigsQ2 and 9, the raising of the collar109 will also raise the members 115--116 clear of the `blocks 88 and 89, as shown in Fig. 1, while on the other hand, the lowering of the collar will lower the members 115-116 to carry them against the blocks 38 and 39 to force them on to the rotating threads 12 and 13, due to the pressure exerted on the levers 11B-*114 by the downwardly traveling collar 109, which tends to spread the levers.

The side curtains 117 are formed of any suitable material and inserted into the mayterial'are Celluloid strips 118 designed to spring of the roller in the same manner as Y a window shade, and each spring roller is mounted in a `semi-circular trough, indicated bythe numeral 120 in Fig. 7, which troughsare secured to the bars 2224f, as shown in Figs. 1, 7 and 8, V

so as to fold with these bars when the device is collapsing, cach trough having an upwardly Vinclined arm 135 at one side at its upper end adapted to direct the curtain hooks hereinafter mentioned into engagement with the cords 7 6 and 77 as the curtains. are drawn out from the rollers. Secured into the curtains at suitable distances apart are vertical steel ribs 121, indicated in Figs. 6 `and 8, the upper ends of which are formed hook-shaped, as at 122 in Figs. 6 and 8, while to their lower ends are attached rollers `123 designed to travelgin grooves 1,24ef'or1ned in the upper `edge of each side of the car body, as shown in Figs. 6 and 7." The side curtains are locked against inadvertent retraction, when extended,by any'well-lrnown means, such as,

'for instance, vertical rods '12o-126 mounted on each end rib 121 and bearing at 'their ends respectively lon thev edge of L the car body andthe flexible cords 76 and 77 under spring pressure but capable of being withdrawn therefrom by' thumb and finger pressure exercised on suitable projections formedA on them.

The bach curtain 127 is secured at its upperiedge to a'bar 127a forming a partof frame 20, while its? lower edge is secured to a spring roller 128 mounted on bar 5, from which it will be seen that the raising of frame 20 will extend the back curtain, unwinding it off the roller 128, on to which "it will be rewoundagain as' the frame 20 lowers when the device is collapsing. A glass window 129 is inserted in the black curtain,`as shown in Fig. 14. Y

130 indicates a gear adapted to mesh with gear 60 to operate the same, which gear is driven from any suitablepower source, such as from the engine flywheel or drive shaft, or as may be arranged, andthe connection is made by ineans of a reverse clutch (not shown) 'so that the gear 130 may be rotated in eitherdirection or held stationery at the will of the operator.

` The manner in which the device operates may be described briefly as follows z-Y-As- 'suming that the cover and its mechanism are in the normal collapsed position shown in Fig. 2 andthat it is desired vto raise it. The operator by means of theV clutch just mentioned starts gear 130 rotating, thus rotating gear 60 and shaft. 11, causing s blocks 38l and 39 to travel inwardly'on the threads 12V and 13 on to which they are pressed bythe springs 16 and 17 The inwardly traveling blocks extend the crossed levers 36 and 37, thus raising the frame` 20, and the collapsed ylazy tongs 45'ont of the box 2, the lids of which are swung upwardly by the rising tongs and as soon asV the lazy tongs, which are in a vertical collapsed position while in the box, are clear of the raisedrlids, they fall over inwardly of their'own accord to a horizontal position, assisted however, by the contact'of the rollers 91-92 with the lid 4 as they pass it, being maintained there bythe bearing of the rollers 91-92 on the bar 26 of the frame 20. r)The blocks 38 and 39 l, continue Vto travel inwardly until they override the threads 12 and 13 at their'inner ends, r0- tating then freely on the plain portion 18 of the shaft 11, when the levers 36 and 37 will be fully extended and the frame 20 will be at its highest point, Yits outer ends being then supported, as shown in Fig. 1, by the bars 21-22 and 23-24 which, asvalready mentioned, extend concurrently with the extension of lthe crossed levers 36 and 37.

During this upward movement the back curtainis raised into position, being untravelinwardly on the threads 46 and 47 and thus extend the' lazy tongs 45, with their cross bars 73 and bars 82-83 and 84-85, the cords 76 and 77 and canopy'100 also extending forwardly at the same time, until, when the bearings 41a and 42a override the threads at the outer ends, the lazy tongs and canopy will be fully extended, the cords 76 and 77 having become taut shortly before, with the hinged cover'portion 102`r engaging 4tightly bar 103 and the jaws 95--96 Vengaging thewindshield posts 96. If desired, theV side curtains may then be drawn out by hand and locked in the manner already described, the hooks 122 riding over the eyes 7 5 of the ribs 73 and on the cords 76 and 77 andthe rollers 123 traveling. in the grooves 124.

To returnthe cover toits rnormal collapsed position in the box, the side curtainsv having been first of all returned tortheir normal position, the gear 130 is rotated in the.oppositedirectiom thus rotating gear 60, shaft 11, the telescopic shaft 63, gears 66 and 67 and shaft 48 also in the opposite direction.l vThe rotation of the shaft 48 causes the bearings 41a and 42a to travel outwardlyl'on the threads 46 and 47, being pressed against' the same to engage thereon by means of the springs 58 and 59, thus retracting the lazy tongs and collapsing the lazy tong levers, the cross ribs, and the longitudinal bars on each other intoV the position shown in Fig. 2, the flexible cords 76` and 77 being meanwhile woundon the sheaves 80 and 81`by the rotation ofv shaft A'which it was lifted on extension of the cover, -carrying'the horse shoe pieces 115-116 with it, until, when the lazy tong mechanism is fully retracted these pieces bear on the ends of the blocks 38 and 39 to force them on to the revolving threads 12 and 13, causing them to travel outwardly thereon and collapse the'crossed levers'36 and 37, and also Y the bars 21-22 and 423-,24 by the tightening of the'cords v131-132, the rotation of shaft 48 ceasing as soon as the projections 68 are free of the cups 69, so that when the Ablocks 38 and'39 have traversed and overridden the threads to come onto contact endwise' with the springs 16 and 17 these levers and bars are in the full collapsedl position and, together with the collapsed lazy tongs and its associated mechanism, which are thrown up into` the vertical position shown in Fig. 2 by contact with the edge of lid 4 during descent, are deposited in the box 2, the lids 3, and 4 which then close one on the other.

What I claim as invention is l. An automobile cover comprising a cover member wound on a roller mounted at the rear of the vehicle, a normally collapsed frame also carried at the rear of the vehicle consisting of an upper movable member and a lower stationary member connected together by pivotally connected links connected to said members, said frame being capable of extension into substantially square or rectangular'formation, a normally collapsed. lazytong mechanism swingably connected at one end to said'upper movable member capable of horizontal extension when said frame is extended and to the free end of which said cover is attached, a plurality of transverse cover-supporting bars carried by said lazy tongs adapted to be moved into or out of position by the respective extension or retraction of said lazy tongs, said bars being eyed at their opposite ends, flexible cords passed through the eyes of said bars and connected at one end to the.,

front end of said lazy tongs, their opposite ends being connected to suitably operated sheaves whereby said cords may be vvoinrd thereon or unwound therefrom concur-V rently with the retraction or extension of the lazy tongs and frame, the length of said cords being such that their limit of extension is reached prior to the limit of extension of the lazy tongs, and mechanism for operating said frame and said tongs.

2. An automobile cover comprising a cover member wound on a roller amounted at the rear of the vehicle, a normally collapsed frame also carried at the rear `of the vehicle consisting of an upper movable mem ber having a transverse bar provided with a longitudinal slot in its lower side anda lower stationary member, said members being connected together by pivotally con.- nected side links connected to said members, a right and left hand threaded shaft rotably mounted adjacent said lowermember provided with unthreaded portions at each end of the threaded portions, blockslthread'ed on the threads of said shaft adapted for inward and outward movement along the same, a pair of normally collapsed crossed links pivotally connected together at midlength the extension of which raises said movable member and side links into position, said crossed links having their lower ends connected respectively to said blocks and their upper ends adapted for slidable movement in the slot of the said transverse bar, means for operating said shaft, a normally collapsed lazy tongmechanism swingably connected to said movable member capable of hori-` zontal extension, means for operating said lazy tongs operatively connected to the threaded shaft and inoperative until the movable member is raised into position, and means for them rendering said operating means operative. i

3. An automobile cover comprising a cover member wound on a roller mounted at the rear of the vehicle, a normally collapsed frame also carried at the rear of the vehicle consisting of an upper movable member having a longitudinally slotted transverse bar and a lower stationary member connected together by pivotally connected side links, a right and left hand threaded shaft rotatably mounted adjacent said lower member provided with unthreaded portions at eachend of the threaded portions, blocks mounted on the outer unthreaded portions when said frame is collapsed, means for engaging said blocks on said threads when said shaft is started rotating whereby they will traverse the threads inwardly and override them at their inner ends, means for rengaging said blocks on the threads at a predetermined point in the retracting operation of the cover, means for rotating said shaft, a pair of normally collapsed crossed links pivot* ally connected together at midlength the er;

tension of whichraises said movable member and side links into position, said crossed links having their lower ends connected respectively to said blocks and their upper ends adapted for slida-ble movement in the slot of said transverse bar, a` vertical telescopic shaft rotatably mounted adjacent said crossed links and extensible and collapsible concurrently with the extension and collapse of the same, said shaft being gear-connected with the threaded shaft at its lower end, a normally collapsedV lazy tong mechanism swingably connected to said movable me`mber in a vertical position when said frame is collapsed and adapted to drop to la horizontal position, during extension of the same, a normally inoperative gear connection betweenA said lazy; tongs andthe upper end of said telescopic shaft, said connection being rendered operative by the raising of the movable member and the dropping of the lazy tongs.

4. Thecombination with a vehicle, of a normally collapsed vertically extensible frame carried at the rear of the vehicle, a normally collapsed horizontally extensible frame carried by said rst frame, a power shaft, means for extending said lirst frame operable from said power shaft, and means for extending said second frame arranged to be operated from said power shaft upon the full extension of said first frame.

5, The .Combination Vwith a vehicle, of a i frame.V

6. The combination with a vehicle, of a normally collapsed vertically extensible frame carried at the rear of the vehicle and a normally collapsed horizontally extensible frame carried by said first frame, a power shaft, means for extending and collapsing the first frame including a rotatable shaft carried by the frame and geared Vto the power shaft, means for extending and collapsing the second frameV including a rota,-V

table shaft carried by said second frame, and a telescopic shaft carried by the first frame to be extended therewith and adapted when so extended to establish a drive connection between the shafts of the two frames.

7 The combination with a vehicle, of a normally collapsed vertically extensible frame including a lower stationary member and an upper movable member, collapsible connections extending between said members and operable to extend or collapse the frame by raising or lowering the movable memberwith' respect to the stationary member, a horizontally extensible cover frame carried by said first frame, a power shaft, and means operable from the power shaft to extend and collapse said frame, said means including flexible connections extending between the members of said frame. i l

8; n The combination with a vehicle, of a normally collapsed vertically extensible frame including a lower stationary member and an upper movable member, a rotatable shaft car ried by said lower member, a pair of crossed members pivotally connected' together intermediate their length and connectedat their upper ends to the upper member Vof the frame, the lower ends of the members being so connected to the shaft as to be drawn together to extend the frame when the shaft" is rotated in one direction and spaced-apart to collapsethe frame when the shaft is rotated in the opposite direction, a power shaft geared tov said first-mentioned shaft, and a horizontally extensible cover frame carried by said first frame. p

9, The combination with la vehicle, of a normally collapsed vertically extensible frame carried at the rear of the vehicle and comprising la lowerstationary member, an upper movable member and pivotally connected link members connecting said upper and lower members at each? end thereof, a normally collapsed horizontally extensible cover frame carried by lthe upper member of said firstfra-me, a pair of crossed levers pivotally connect-ed together intermediate their length and slidably attached attheir upper ends to the upper member of' said first frame, flexible connections extending betweenvsaid crossed levers and certain of .the links connecting the ends of the upper and lower members of said first frame, and power means operable to move the lower ends of said crosslevers toward one another to extend said frame or away from one another to collapse said frame.

10. The combination'with a vehicle, of a vertically extensible frame carried at the rear of the vehicle, a power shaft, means for extending said frame including a rotatable shaftgeared to said power shaft, a ,horizontally extensible frame carried by the upper portion of 'said first frame, means for extending the lastlnamed frame, including a rotatable'shaft carried by said'frame, a telescopic shaft carried by said first rframe and extensible therewith, the lowermost section'v of the telescopic shaft being geared to the first mentioned shaft of said first frame and being adapted inthe extended position of said shaft to gear with the shaft of the secg ond frame to transmit power thereto. Y

ll. ln a device of the character described, the combination with a vertically extensible frame, and means for extendingV and collapsing said frame including a rotatable shaftcarried by the frame and a power shaftl geared lto saidv first-mentioned shaft, of a horizontallyextensible cover frame including a lazy tong structure, a horizontal shaft supported by the upper end of the first fra-me and to wliiclrthe end levers at one; end of the lazy tongue structure are attached, said end levers being so connected to thev shaft as to be separated Vto collapse the frame by rotation of the shaft in one direction and drawn together to extend the frame by rotation'of the shaft in the opposite direction, and means collapsible with the' first frame toV establish a drive connection between the shaftsof the two frames'.

Dated at Vancouver, B. C., this 17thV day of December, 1918.

PERGIVALv FAULKNER K lNGr. 

